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The Low Dose of Saccharomyces cerevisiae Is Beneficial for Rumen Fermentation (Both In Vivo and In Vitro) and the Growth Performance of Heat-Stressed Goats

文献类型： 外文期刊

作者： Xue, Ligang 1 ; Zhou, Shuyi 2 ; Wang, Dan 3 ; Zhang, Fangyu 4 ; Li, Junfeng 3 ; Cai, Liyuan 5 ;

作者机构： 1.Jilin Agr Sci & Technol Univ, Coll Anim Sci & Technol, 77 Hanlin Rd, Jilin 132109, Jilin, Peoples R China

2.Hainan Prov Anim Husb Technol Promot Stn, Haikou 570100, Hainan, Peoples R China

3.Jilin Agr Univ, Coll Vet Med, Changchun 130118, Peoples R China

4.Jilin Acad Agr Sci, Inst Anim Husb & Vet Med, Shengtai St, Changchun 130033, Peoples R China

5.Huazhong Agr Univ, Coll Anim Sci & Technol, Dept Anim Nutr & Feed Sci, Wuhan 430070, Peoples R China

关键词： goats; heat stress; Saccharomyces cerevisiae; rumen fermentation; growth performance

期刊名称：MICROORGANISMS （ 影响因子：4.926； 五年影响因子：5.143 ）

ISSN：

年卷期： 2022 年 10 卷 10 期

页码：

收录情况： SCI

摘要： This study aimed to investigate the effects of Saccharomyces cerevisiae on rumen fermentation and the growth performance of heat-stressed goats. The fermentation experiment was conducted using Saccharomyces cerevisiae added at 0 parts per thousand (HS1), 0.30 parts per thousand (SC1), 0.60 parts per thousand (SC2), and 1.20 parts per thousand (SC3) of the dry matter (DM) weight of the basal diet. The results showed that supplementing with 0.60 parts per thousand (SC2) could increase the pH, acetic acid to propionic acid ratio, the concentrations of ammonia nitrogen, total volatile fatty acids, acetic acid, propionic acid, butyric acid, and the degradability of DM, neutral detergent fiber, and acid detergent fiber in rumen fluids of heat-stressed goats. In the feeding experiment, twelve heat-stressed goats were assigned to a 4 x 4 Latin square experimental design, and the Saccharomyces cerevisiae supplement levels are similar to the fermentation experiment above. Similar effects on rumen fermentation and digestibility parameters were obtained with a supplement with 0.60 parts per thousand of Saccharomyces cerevisiae (SC2A) compared to the fermentation trial. Moreover, in the SC2A group, the DM intake and average daily gain also increased significantly compared with other groups. These results suggested that a low dose of Saccharomyces cerevisiae can still effectively improve the rumen fermentation and growth performance of heat-stressed goats.

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